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Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2021

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Total Stock-Based Compensation Expense Included in Company's Condensed Consolidated Statements of Operations and Comprehensive Income

The total stock-based compensation expense included in the Company’s condensed consolidated statements of operations and comprehensive income was as follows:

		Three Months Ended September 30,								Nine Months Ended September 30,
		2021				2020				2021				2020
Cost of revenues		$	0.9			$	1.2			$	2.8			$	3.1
Research and development			1.1				1.0				3.3				3.0
Selling, general and administrative			6.9				5.1				21.7				15.9
Acquisition and integration costs			—				0.1				—				0.7
Total pre-tax stock-based compensation expense		$	8.9			$	7.4			$	27.8			$	22.7

Summary of Activity for RSUs

The following table presents the activity for RSUs under the 2014 Plan:

		Nine Months Ended September 30, 2021
		Outstanding RSUs				Weighted Average Grant Date Fair Value
RSUs – beginning of period			0.6			$	93.26
Granted			0.2			$	177.91
Vested			(0.3	)		$	95.47
RSUs – end of period			0.5			$	127.31

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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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-Name Accounting Standards Codification
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Tabular disclosure of the changes in outstanding nonvested restricted stock units.

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-Name Accounting Standards Codification
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